Motor-vehicle transmission mechanism.



R. HUPF.

MOTOR VEHIGLE TRANSMISSION MEGHANISM.

'APPLICATION I'ILED JULY 27, 1910.

qwima {W w R. HUFF. MOTOR VEHICLB TRANSMISSION MEGHANISM. ATPLIOATIONFILED JULY 27, 1910. 1, 1 22,1 20. 2 j Patented Dec. 22, 1914.

I R. HUFP. MOTO VEHIOLE TRANSMISSIQN MEGANISM.

APPLICATION FILED JULY 27, 11910.

Patented Dec. 22, 1914.

5 SHBETS-SHET 4.

R. HUFF.

MOTOR VEHICLE TRANSMISSION MEGHANISM.

APPLICATION FILED JULY 27, 1910.

Patented Dec. 22, 1914.

6 SHETS-SHEET 5.

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I UrrED s'rATEs PATENTY nif'ron.

RUSSELL HUFF, OF DETRIT, MICHIGAN, ASSIG'NOR T PACKARD MOTOR CARCOMPANY, OF DTROIT, MICHIGAN, :A CORPORATION OF MIGHIGAN.

MOTOR-VEHICLE TRANSMISSON MECHANISM.

To all 'whom it may 0011186777,:v

Be it known that I, RussnLL HUFF, a

mechanism; a

Another object is to construct the mechanism so' that the change speedand differential mechanisms may be attached to and removed from thevehicle as a unit, so that all adjustments, etc., may be made vwhile themechanism is removed from the vehicle and on the bench.

Another object is to so construct the connections to the casings thatthey may be readily broken to facilitate the easy removal andreplacement of the transmission mechanism.

Another object is to construct thecasing and .the bearings for the gearsso that* the mechanism maybe easily removed from its casing. i

Another object is to construct the differential casing so as to permit amaximum j clearance with maximum'size of the driven bevel gear, and toconstruct this oasing so that it'is simple in construction and cheap tomanufacture.

Further objects will appear from the detail description taken inconnection with the' accompanying drawings, in which-.-

Figure 1 1s a plan view of the transmisslon'mechanism; F1g. 2 is alongitudlnal horizontal 'section through he mechanism shown in Fi g. 1;Fig. 3 is an end view of the change speed casing with the front coverremoved; Fig. 4 is a viewsimilar to Fig. 3 with the gearing in place anda part of the cover shown in section; Fig. 5 is a front view of thediiferential casing; F ig. 6 is a section on the line (if-6, Fig. 5; andF ig. 7 is a perspective view of the change speed casing.

Specification of Letters Patent.I i Patentel Dec. 2 2, 1914. Applicationfiled July 27, 1910. :Serial No. 574,199.

Referi'ing to'the drawings, 10 designates the differential casing, 11the change speed casing bolted thereto, and 12 the end cover plate forthe change speed casing.

The difierential casing is preferably integralthroughout', and ispreferably cast of some light material as aluminum. It has its greatestdiameter at the center and tapers toward vthe vends as ushown, and thelends are providedwith inwardly extending sleeves 13 connected bystrengthening webs 14 to the casing walls. The sleeves 18 are bored toreceive the axle casings 15 which are further secured to thediiferential casing by 'means of flanges 16, which are rigidly securedto the axle casings by a pressed fit or the like, and to the diferentialcasing by means of bolts as shown.

The change speed casing 11 is provided with a fiange 17, and thediflferential casing is provided with a coperating inwardly extendingflange 18, and these casings are secured together by bolts 19 passingthrough the flange 17 and into the flange 18 as'shown in the drawings.The change speed casing is provided with an' integral end wall 20 whichhas formed integral therewith a pair of spaced bearing lugs 21, 21,extending outwardly from' the wall, at'bearing -lug` 22 extendinginwardly, and another bearing lug 23 located between the spaced bearinglugs 24 of a differentialmechanism 25. The dif-` ferential mechanism isarranged to lbe connected with the axles 26 which are construct- -ed tobe removed axially therefrom, and the diferential mechanism is arrangedto be adjusted transversely, that is, longitudinally of the axles, bymeans of adjusting sleeves 27 which are adapted to be locked in place bysuitable looking means not shown.

The difl'el'ential mechanism '25 has bolted vto it a driven bevel gear28 which meshes with a driving hevel gear 29, supported at one end by anantifriction bearing in the 'bearing lug 2.3, and at the other end byantifriction bearings in a slceve 30, which is adjustable in thebearing'lug 22 as shown.

This construction of the bevel` gears permits their adjustmentrelatively to each other m transverse directions so as to permit themesh of the bevel gears to be closely adjusted. The slee've 30, like theadjusting sleeves 27, is arranged to be locked in adjusted position'by asuitable looking device.

The shaft for the driving'bevel gear 29 has mounted upon it or formedintegral therewith, a gear-31 provided both -with externalandv internalteeth. This gear has mounted therein an antifriction bearing which isarranged to supportone end of an angular driving shaft 32, the other endof which is supported in an anti-friction bearing 33 in the end or coverplate-12. The casing 11 is machined as at 34, so 'as to forma finishedbearing face vfor a ring 35. This ring is secured to the casing by meansOf bolts 37 passing through the casing and through a flange 36 on theringj The ring is constructed 'to'V` receive and support an iantifriction bearing 38, which supports one end of a shaft 39, the otherend being supported by an anti`friction bearing 40 in the end plate 12..The shaft 39 has mounted thereon, gears 41, 42, and 43,"the gears 42'and 43 being mounted on opposite sicles of the bearing-38 and itssupporting ring 35, and the internal diameter of the ring being slightlygreater than the external diameter of the gear 43, so that this gear maybe removed axially with its shaft-through the ring.

The shaft 32 has slidingly mounted 'thereon a sleeve 44, provided with`gears which are arranged to meshwith gears 41, 42, and to clutch withthe internal teeth in the gear 31, so as to drivethe bevel gear 29 atthree different speed forward. This sliding sleeve 44 is arranged to beshifted longitudinally of the shaft 32 by means of a shifter rod 45, anda fork thereon.- A gear 46 is mounted at'oneend of a lever 47l which ispivoted in a bearing lug 48 in the casing 11, and in another bearing inthe cover 12.` The other end of the lever is connected by means of alink 49, and an arm 50 to' a shaft 51 which is mounted in a. bearing lug52,011 the cover. This shaft has mounted upon it an ar1n-53 to which isconnected a link 54 which extends forwardly to' a control lever. Thegear 46 is a wide gear, and is construeted to mesh with the gear 41, andthe smaller of the gears on the sleeve 44 when this sleeve is in theposition shown in Fig. 2. By' means of this train of mechanism, theshaft 32' is arranged to drive the driving bevel gear 29 in a reversedirection. `The .casing 11 has formed thereon a lug 58 to which` isbolted a cap 59 which is arranged to receive'the usual ltorsion rod 60.l

connection with a link 63 extending to a controlling lever.

It will be seen that the entire change speed and differential mechanismis mounted upon a single support, namely, the casing 11' so as to form aunit therewith and so as to be removable therewith. The powertransmitting, the controlling, and the supporting connections to thechange speed casing consisting'ofthe propeller shaft, gear controllinglinks 54 and 63 and torsion rod 60, can all be broken, and by thenremoring the axles from the dilferential mechanism, and unbolting thechange speed casing from the diferential casing, the entire change speedmechanism can be removcd from the vehicle as a unit. This isex'eeedingly adrantageous since it permits all of the adjustments, etc.,between the change speed' gears as well as the bevel gears to be madewhile the mechanism is in the assembly room or on the bench.Theadjustments, etc., can be of course more satisfactorily andexpeditiously accomplished in the assembly room since the space is notso `crowded as when the mechanism is in place. on .the vehicle.

It is desirable to construct the driven bevel gear 28 of as large adiameter as possible in order that the driving bevel gearmay be 'of alarge diameter, at the same time keeplarge enough so as to permit theinsertion in and removal from the same of the driving bevelgear whichnecessarily is large. The differential casing must also be provided with.a flange into which the fastenings can pass. In accordance with thisinvention a maximum driven bevel gear diameter and a maximum clearanceare obtained in the following manncr. The fiange 18 is constructed toextend inwardly so as to obriate the projection of the same outwardlyfrom the diiferential casing. Now if the flange projects inwardly, theverticaldialucter of the opening is necessarily narrow, so that it isless than the diameter of the bevel gear. In' order therefore to permitthe insertion of the bevel gear, the opening is made ob- ^long with its,longer axis or dimension horizontal, the longer dimcnsion being greaterthan the diameter of the bevel gear so that the bevel gear may be placedin position in the casing by inserting the same in a horizontal positioninto the dill'erential casing and then turning the samev in a Verticalposition. By means of this construction, the clearance and the drivenbevel gear diameter may be made a maximum.

The ring forms a support which is close to both of the gears 42 and 43.This forms a rigid bearing which prevdents springing .of the shafts andthe gears thereon, and thus reduces vibration and noise considerably.The shaft 89 and its gears may be easily removed from the casing byunbolting the cover 12 and removing the shaft and its gears endwise, thegear 4:3 clearing the larger opening in the ring 85. The driving bevelgear 29, its shaft and the gear 31 may also be removed endwise byunscreWing the sleeve 30 from its bearing lug 22, and removing the ring35. It Will thus be seen that the casing and the bearings therein are soconstructed that all lof the gears may be removed therethroughendwise'by unbolting the cover 12.

It is obvious that Various changes may be made in the details ofconstruction without departing from this invention, and it is therefore,to be understood that this invention is not to be limited to thespecific construction shown and described.

Having thus described the invention, What is claimed is:

1. In a transmission mechanism for mo- Qtor Vehicles, the combinationwith change speed and difl'erential mechanism, of separable casingsinclosing said mechanism, and bearing supports for saiddifl'erentialmechanism integral With said change speed mechanism casing. i

2. AIn a transmission mechanism for motor' Vehicles, the combinationwith change speed and diferential mechanism, of 'separable casingsinclosing said mechanism, and bearing supports for said di'f'f erentialmechanism integral with said change speed mechanism casing, and adetachable end cover for said casing.

3; In a transmission mechanism for motor Vehicles, the combination Withchange speed and. difi'erential mechanism including driving and drivenbevel gears, of separable casings inclosing said change speed anddifferential mechanism, and bearing supports for said bevel gearsintegral with said changev speed mechanism casing;

4. In a transmission mechanism for motor Vehicles, the combinationWithchange speed and diflerentia-l mechanism, of a casing for 'saiddifferential mechanism, and a casing inclosing said change 'speedmechanism adapted to besecured to-said differentialcasing and'providedwith integral bearing lugs for said difi'erential mechanism.

5. In a transmission mechanism for moi tor Vehicles, thecombination withchange speed and d-ifi'erential mechanism, of a casing for saiddifl`erential mechanism having a front opening, a casing inclosing saidchange speed mechanism and provided With integral bearing lugs for 'saiddiiferential mechanism, and means for securing said change speed casingto said differential casing with the differential mechanism in positionin its casing.

6. Ina transmission mechanism for motor Vehicles, the combination Withchange speed and difl`erential mechanism, -of a casing for saiddifferential mechanism, a casing inclosing said change speed mechanismand adapted to be secured thereto and provided with integral bearinglugs for said differential mechanism, and driven shafts lextending intosaid diflierenti'al casing and having a detachable connection With saiddifi'erential mechanism.

7 In a transmission mechanism for motor Vehicles, the combination 'Withchange speed and diferential mechanism, of a casing inclosing saidchange speed mechanism and having an integral end Wall, and bearing lugsfor said differential mechanism projecting from said Wall.

8. In a transmission mechanism for motor Vehicles, the combination Withchange speed and diiferential mechanism, of a casing inclosing saidchange speed mechanism and'having an integral end Wall, bearing lugs forsaid dilferential mechanism projecting from said Wall, and a detachableend wall for the other end of the casing.

9. In a transmission mechanism for motor Vehicles, the combination Withchange speed and differential mechanism including 'driving and drivenbevel gears, of a casing inclosing said change speed mechanism andhaving an integral end wall, and bearings on said wall for one of saidbevel gears.

10. In a transmission mechanism for motor Vehicles, the combination withchange speedY and differential mechanism including driving and drivenbevel gears, of a casing inclosing said change speed mechanism and speedand difl'erential mechanism including dri'ving and driven bevel gears,of a casing inolosing said change speed mechanism and having .an mtegralend Wall, and bearmg lugs project'ing lfrom said wall for saidl drivenbevel gear.l z

12. In a transmission mechanism for motor Vehicles, the combination Withchange speed and diflerential mechanism lncluding driving anddriven'bevel gears, of a casing inclosing said change speed mechanismand having an integral end Wall, a bearing lug on said Wall ;for thedriving bevel gear,

vand bearing lugs projecting from said wall for the drivenbevel gear.

13. In a transmlsslonmechamsm for mospeed and Qdmlng'anddn'abongarsafa-caslng tor vehicles, 'a gear casing having anintegral end wall, and a pair of spaced bearing lugs projectingtherefrom.

14. 'In a transmission mechanism for motor Vehicles, a gear casinghaving an vintegral end Wall, a pair of spaced bearing lugs `projectingoutwardly therefrom, and a removable end wall fo'r the other end of thecasing.

15. In a. transmission mechanism for motor Vehicles, the. combinationwith change speed and differential mechanism including driVing anddriven bevel gears, of a casing inclosing said 'change speed mechanismand having'an integralV end wall, and bearings for said beVel gearsintegralwith said wall. 16. In a transmission mechanism for motorVehicles, the combination With change l O O O inclosing said changespeed mechanlsni and having an integral end Wall, bearings in said wallfor one of said beVel gears, and a detachable end ,Wall for the otherend of said casing, Whereby said gearing may be removed therethroughendwise.

17. In a transmission mechanism for motor Vehicles, the combination withchange speed and differential mechanism, of a casing inclosing saidchange speed mechanism and having an integral end wall, a detach- 'ableWall for the other end of the casing, bearings for said change speedmechanism supported by said end walls, andl bearings for lsaiddiii'erential mechanism supported by said integral end wall.

' 18. In a tr'ansmission mechanism for n10- tor' Vehicles, thecombination with a change speed gearing and a (lifferential mechanism,of a casing surrounding the change speed gearing, a detachable cover atone end of the casing, bearings for the change speed gearing in thecasing and coV-er, and bearings for the difi'erential mechanism in anintegral extension of the casing.

19. In a transmission mechanismfor moi tor Vehicles, the combinationWith a` changel speed gearing and a differentialmechanism,

of a casing surrounding the change speed` gearing, a detachable coven atone end of the caslng, bearings for 'the change speed gearing 1n thecaslng and cover, bearmgs for the diiferential mechanism in an in-'tegral extension of the casing, and a ,casing surrounding thedifferential mechanism and connected with the first, casing.

20. In a`transmission mechanism for motor Vehicles, the combination withdriVing and driven gears, of a support for said gears, a casing adaptedto receive said driven gear Vertically, therein and having an oblongopening therein through which said .driven gear is adapted to pass, andmeans for securing said support to said casing.

clifi'erential mechanism includmJr -to receiVe said driven gearVertically therein and having an oblong opening therein wlth 1ts longaxls horlzontal through which said driVen gear and 1ts bearmg lugs areadapted` to pass, and means for detachably secunngsodsupporttosaidcaing.a

93.' In a transnnsslon mechamsm for mo.- tor Vehicles, the combinationof a casing having an opening of greater diameter horizontally than'vertical'ly, of a differential gearing adapted to be housed in saidcasino` with its beVel gear in a Vertical plane, sai bevel gear beinglarger than the Vertical diameterof said opening but smaller than thehorizontal diameter thereof, and said w casings permitting thedifi'erential gearing x to be turned While in said casing to remove itthrough said opening.

24:. In a transmission mechanism for motor Vehicles, the combinationWith a rear axle casing, having an oblong opening therein with itslonger axis horizontal, of a driven gear adapted to be passed into saidcasing through said opening, and to be located Vertically therein.

In a transniission mechanism for m0- vential casing comprising a singleintegral structure having -integral sleeves projecting inwardly therein,and axle tubes extending into said sleeves.

28. Ina transmission mechanism for motor Vehicles, the combination Witha difl'erential casing having integral sleeves projecting inwardlytherein, 'o a support having bearing lugs for the diiferentialprojectinginto said, casing.

29. In a transmission mechanism 'for mo- 13:0

tor Vehicles, the' combination with a differential casing havingintegral sleeves projecting inwardly therein, of a change speed casingdetachably secured to said differential casing. i

30. In a transmission mechanism for motor Vehicles, the combination witha differential casing having integral sleeves projecting inwardlytherein, and having an opening therein, of a second casing detachablysecured to said differential casing at said opening.

31. In a transmission mechanism for motor vehicles,-the combination witha differtial casing having integral sleeves projecting inwardly therein,of a second casing detachably secured to said differential casing andhaving a pair of bearing lugs `thereon projecting into said differentialcasing. v

32. In a transmlsslon mechanism for motor Vehicles, the combination witha differltial casing having an inwardly projectingl flange, of asupport, and fastening means assing through said support and into saidan e.

In a, transmission mechanism for'motor'vehicles, the combination with adifferential casing having an opening therein and an inwardly projectingfiange at said opening, of means closing said opening, and fasteningssecuring said closing means to said flange.

34. In a transmission mechanism for motor Vehicles, the combination withva 'differential casing having an oblong opening therein with the longeraxis horizontal and an inwardly projecting flange at said open- I mg, ofa support adapted to be secured to` said casing at said 'opening and tosaid flange, and a gear on ,said support adapted to be placed in saidcasing.

35. Ina motorv vehicle, the combination with change speed anddifferential mechanism, of a casing for said difl'ere'ntial mechanism, acasing for said change speed mechanism detachably secured to saiddiferential casing, bearings fort said differential mechanism supportedby and removable with said change speedv casing, and detachableconnections to said change speed'casing extending forwardly thereof.

36. In a motor vehicle, the combination I with change speed anddifferential mecha'- nism, of a casing for said diflf'erentialmechanism, a casing for said change speed mechanism detachably securedto said differential casing, bearings for said` difi'erential mechanismlsupported' by and removable with said change speed casing, anddetachable power transmitting and controlling connections extendingforwardly ofv said change speed casing. p

'37. In a motor vehicle, the combination with change speedanddifi'er'ential mechanism, of a casing for said ,diiferential mechanism,a'casing for ,said change speed mechanism detachably secured to saiddiiferential caslng, bearings for said differential mechanism' supportedby and removable with said change speed casing, and detachable -powertransmitting, controlling, and supmeans for detachably securing saidchange speed casing to said diflierential casing, and detachableconnections to' said change speed casing extending forwardly thereof.

39. In a ;notor vehicle, the combination with a bridge or axle casinghaving an opening in its forward side, of a change speed casing andgearing adapted to be detachably secured to the. forward side of saidaxle casing, and a differential gearing mounted on said change speedcasing adapted to be inserted 'rearwardly through said' bridge openingad withdrawn. forwardly therethrough,'and housed by said bridge or axlecasing while the change speed casing 1s secured in place, driving andgear controlling connections from the change speed casing'to the'forward part of the vehic1e,.and detachable couplings in saidconnections forward of the change speed casing adapted to permit thesame to be withdrawn forwardly from the bridge.

40. In a transmission mechanism for motor Vehicles, the combination witha caslng, of alined driving and driven shafts,

mounted' in said casing, a counter shaft,

constantly meshing gears on the counter and one of the alined shafts, asecond gear on the counter shaft, a sliding gear on the other alinedshaft adapted to mesh with the second counter shaft gear, bearingsupports for the countershaft at two points only and one of'v saidsupports being arranged between the gears thereon.

41. In a transmission mechanism for motor Vehicles, in combination, acasing, parallel shafts in the casing, gears on each ofv said shafts,each of said shafts having bearing' supports at two points only,abearlng for one of said shafts being arranged between two of the gearsof that shaft.

42. In a transmission mechanism for motor Vehicles, incombination, acasing,

ing, a counter shaft, two gears on the counalined drivingv and drivenshafts in said caster shaft, a bearing for the counter shaft in thecasing between said gears, and a sliding gear on one of the alinedshafts having driving connections on either side of said bearing. i

43. In a transmission mechanism for mow tor Vehicles, in cfombination, acasing, alined clriving and driven shafts ins `aid casing, a countershaft, two gears on the countershaft, abearing support detachablysecured in said casing between said gears and having a bearing seat oflarger diameter than one of said gears, a bearing for the counter shaftin said support, and gears on the alined shafts adapted to mesh with thecounterA shaft gears.

44. In a transmission mechanism for motor Vehicles, in combination, 'acasing, alined p i driving and driven -shafts in said casing, la

counter shaft, two gears on the countershaft, a bearing supportdetachably secured in said casing between said gears and having abearingseat of larger diameter than one of said beyond said bearing.

45.' In a transmisslon mechanism for mow tor Vehicles, the combinationwith a differential casing having inwardly extending` sleeves, of adetachable support having bearing lugs for vthe diflerential projectinginto.

said casing between said sleeves.

46. In a transmission mechanism for motor Vehicles, the combination witha diferentialcasing having inwardly extending sleeves and vhaving atransverse opening, of a support detachably secured to said casing forclosing said opening and having bearing lugsfor the differentialarra'nged adjacent to and between the inner ends of said sleeves.

47. In a transmission mechanism for moo tor Vehicles, the combinationwith a differential casing having' inwardly extending sleeves and havinga transverse opening, differential gearing having a bevel gear thereon,and adriving pinion for said bevel gear, of a detachablesupport securedto said casing over said opening and having bearings for said pinion andbearing lugs for the differential gearing projecting into the casingbetween said sleeves.

48. In a transmission mechanism for motor. vehicles, in combination, adiiferential casing having an enlarged central part and tapering ends,tubes secured .in said ends and extending inwardlytoward the center ofthe casing, and a support having bearing lugs for the diferentialprojecting into the casing between the inner ends of said tubes. 49. Ina transmission mechanisln for motor Vehicles, in combination,a'difi'erential casing having an enlarged central part and taperingends, said casing also having a transversc opening therein, tubesisecured in-said ends and extending inwardly toward the center of thecasing, a diferential mechanism, a driving pinion therefor, a supportdetachablyi secured to said casing at said opening and having bearingsfor said pinion and bearing lgs for said di fl'erential mechanismprojecting into the casing between the inner ends of said tubes, andaxiallyremovable 'axle Sections in said tubes extending into operativerelation with said diferential mechanisrn.

In testimony whereof I affix my signature in presence of two witnesses.

I RUSSELL HUFF. IVitnesses:

C. I. DALE, W. H. FINCKEL, Jr.

